Answer:
Last answer
Explanation:
The first 3 answers can be thrown out by process of elimination.
Answer 1 can't be right because no human has been on Mars.
Answer 2 can't be right because the space shuttle launch came after the last humans were on the moon.
Answer 3 can't be right because again the space shuttle didn't come around until long after the last human was on the moon.
So the only possible answer has to be the last.
 
        
             
        
        
        
Answer 
10%
Explanation
Learned last year
        
                    
             
        
        
        
Answer:
B.Lipid
Because With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol 
 
        
             
        
        
        
False dna will change every generation